1) Remove the suction cup.
2) Run the transducer line along whichever side you mount the head.
3) Fasten line to thwarts, bow seat with zip ties.
4) Run line all the way forward to bow bulkhead and use silicone caulk to make a 'puddle', making sure you have no air bubbles.
5) Imbed transducer in caulk, and let cure for a day or two, before moving canoe.
6) Carefully portage canoe to nearest body of water for a test paddle. (If you live farther from a body of water than I do, you may want to load it up and drive.)

This is a 'permanent' mount that can be removed by cutting the silicone (harder than it sounds).

mastertangler wrote on Sep 24^th, 2010 at 3:10am:

Through the hull exactly as O_S described is wonderful. No fuss, no muss and no annoying gurgle at cruising speed.

I do the latter, solved the issue....and I can tell exactly where is was for the next time; ah but is an oxidation issue. If you buy two red sports cars that changes everything. I have also shot through the hull, I used the acoustic epoxy; the Silicon Caulk is a good idea, thats easier to cut than the epoxy

I never really considered it was slow me down, rather that it was speeding me up to catching the fish that I was fishing to, the culinary delight that I was seeking, and then there are the photo opps too.

Not as long as you use small caliber rounds.